According to a family member, the “No Church in the Wild” rapper will serve as Mr. West’s best man when he ties the knot over the weekend.

The source also said that it was likely that Jay had to convince Bey to go- "Beyonce had to think about it at the last minute, she didn't really want to go, but I think Jay Z's the best man, so he's kind of making her go."

Meanwhile it sounds like the rainy spring season has Kim worried about the weather for her big day. "She made it clear that this bad weather is really getting to her. She's clearly spending millions getting married in Europe, and if it all turns into a wash-out she will be really unhappy."